Everyone agrees that Sycamore isn't fault tolerant, but I don't think many people agree that it is "not much different than a sufficiently complex other physics

Everyone agrees that Sycamore isn't fault tolerant, but I don't think many people agree that it is "not much different than a sufficiently complex other physics experiment". Here's a test: do you think there is any device that could be achieve quantum supremacy without being fault tolerant? If not, then your complaint isn't specific to Sycamore at all.